# Maintenance by Socket Mobile vs Marine Docker

The clearest difference is update cadence: Marine Docker at every 4 months against Maintenance by Socket Mobile's every 21 months. Marine Docker also leads on iOS requirement (13.4 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Maintenance by Socket Mobile ships an update every 21 months, Marine Docker every 4 months. The most recent releases landed on September 1, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Maintenance by Socket Mobile | Marine Docker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/maintenance-by-socket-mobile/id1562749373/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 4 months** |
| Monetization | Free | — |
| Size | 24 MB | 61 MB |
| Requires iOS | 15.6 | **13.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Socket Mobile](https://appshunter.io/developer/456055935) | [Kontis d.o.o.](https://appshunter.io/developer/1745258669) |

## What reviewers say

### Maintenance by Socket Mobile

[App page](https://appshunter.io/ios/app/maintenance-by-socket-mobile/id1562749373)

This utility app allows users to upgrade the firmware on Socket Mobile Bluetooth LE NFC readers and barcode scanners. It provides information on current and available firmware, device statistics, and configuration settings. Designed for advanced users, it facilitates essential maintenance for compatible hardware.

**Highlights:** Firmware upgrade, Display firmware information, Device statistics, Device configuration, Identify reader

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Marine Docker

[App page](https://appshunter.io/ios/app/marine-docker/id6502378616)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Maintenance by Socket Mobile free?

Maintenance by Socket Mobile is free to download, with no in-app purchases.

### Is Marine Docker free?

Marine Docker is free to download, with no in-app purchases.

### Do Maintenance by Socket Mobile or Marine Docker have ads?

Neither Maintenance by Socket Mobile nor Marine Docker shows ads.

### Which is updated more often, Maintenance by Socket Mobile or Marine Docker?

Maintenance by Socket Mobile ships an update every 21 months, and Marine Docker every 4 months. Most recently, Maintenance by Socket Mobile was updated on September 1, 2026 and Marine Docker on September 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*